The ProFlex 7951 Cut-Resistant Protective Arm Sleeves are designed with aramid fibers that offer both ANSI/ISEA 105-2016 level A5 cut protection and EN 407 level 1 heat protection when handling hot materials (212 degrees F/100 degrees C for up to 15 seconds). Crafted with both a pre-curved design and flex zones in the elbow, these arm sleeves make for a natural and comfortable fit. They also feature a soft neoprene thumb loop and adjustable arm straps to ensure a secure fit that leaves no part of the arm exposed to potential cut hazards. Aramid fiber is tested to ANSI/ISEA 105-2016 level A5 cut protection and ANSI/ISEA 105-2016 level 3 abrasion-resistance for safety around the sharpest and roughest materials. Classified by the weight needed to cut through, ANSI/ISEA 105-2016 level A5 is the highest cut rating with a measure of 2,200-2,999 grams. Heat-resistant cut sleeves are best for workers handling hot materials in applications such as manufacturing, automotive, construction and more.